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Table 11 Farm income: standardised detectable differences and equivalent levels for different designs

From: Evaluation of alternative school feeding models on nutrition, education, agriculture and other social outcomes in Ghana: rationale, randomised design and baseline data

  Farm incomes (in SDs) Percentage difference
30 clusters 0.6 0.69
60 clusters 0.4 0.46
120 clusters 0.3 0.35
  1. SD standard deviation